I know where you are coming from. Try selling an old E30 325i BMW and getting all the voicemails in irish accents offering you 1/2 what you put it very reasonably for a quick sale up for! Quite a desirable car to slam to the ground and use for drifting around in. I loved that car so held out for an enthusiast.
A good way to avoid all the messing round is just post up on somewhere like here or an owners forum if you frequent one. Put where you are and be honest about the condition etc and say you just want it gone by X date and normally someone will looking for a car to tide them over or know someone who is. Anything over scrap/PX value pays for a treat for you and the OH and is more satisfying that feeling done over by a dealer.
Did exactly that for a friend of mine and a lad from my local cycling club bought it and a year later it’s still going and taking him on trips and he doesnt need to worry about throwing the bike in the boot as it’s bangernomics. Was heading to the scrap yard the next day if not sold.